Methods and apparatus for silent alarm channels using one-time passcode authentication tokens
US9515989B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2012 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Nov 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0869
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are provided for silent alarm channels using one-time passcode authentication tokens. A message is transmitted indicating a potential attack on a protected resource by obtaining the message; combining the message with a tokencode generated by a security token to generate a one-time passcode; and transmitting the one-time passcode to a receiver. A plurality of the messages can be obtained in parallel, and the plurality of parallel messages can be combined with the tokencode to generate the one-time passcode. A subsequent message can optionally be generated by applying a hash function to a prior n-bit value to provide a counter identifying each message. The message optionally also comprises one or more additional bits to provide an annotation of the message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.